/// <summary>
/// ///用来实现移动图层
/// </summary>
private void treeViewLayers_DragDrop(object sender, DragEventArgs e)
{
Point targetPos = ((TreeView)sender).PointToClient(new Point(e.X, e.Y));
TreeNode targetNode = this.treeViewLayers.GetNodeAt(targetPos);
if (targetNode.Nodes.Count != 0)
{
return;
}
TreeNode moveNode = (TreeNode)e.Data.GetData("System.Windows.Forms.TreeNode");
TreeNode NewMoveNode = (TreeNode)moveNode.Clone();
targetNode.Parent.Nodes.Insert(targetNode.Index, NewMoveNode);
myMap.ChangeLayerIndex(moveNode.Index - 1, targetNode.Index - 1);
treeViewLayers.SelectedNode = NewMoveNode;
targetNode.Expand();
moveNode.Remove();
UpdateMapImg();
}